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[folder52]

Hello there! I need you help please! This is my first grow, so I don't know what I'm doing :-)

The problem is - Yellow spots appeared a few days ago and are getting bigger!

Setup:

• Autos, germination started on 01 December.
• Coco coir + perlite
• RH is ~60%
• Temp is 24C / 75F on average
• Lights: 18/6, 60%
• Watering every other day with ~30% of recommended amount of nutrients: 0.5ml A+ 0.5ml B of Canna Coco + 0.5ml CalMag for 1L; pH=5.95.

🙏🙏🙏

[Rootsruler]

Humidity is too high. Try getting it down to around 55% - 60%.

[Rootsruler]

I'll agree with Bluey except for RH and temp. I would run it a little lower at around 55% - 60%. Once new growth comes in healthy run your temps slightly higher at around 26c but 24c should be ok. 31c is too high. If you can reduce the PPFD/light intensity to around 350 that would also help until new growth comes in healthy then I would run it at around 26c - 28c.

If you really want to dial in your environment buy an infrared thermometer gun. They are cheap and will allow you to read leaf temps. You want to run your leaf temps at around 24c - 28c so whatever air temperature you need to be at to achieve those leaf temps.

N at this stage should be increasing so N in your Cal/Mag solution should be fine unless you are counting on the worm castings to provide the N you need. Nothing in your media is providing nutrition other than the worm castings so you need to treat it almost like an inert media, you providing all nutrients so paying attention to nutrient mix is important versus straight soil where more of the natural processes are there to provide nutrition and you don't have to be as diligent.

Check the tutorials on proper watering techniques. I like to use the light pot method. I can usually tell just from looking at them when they are on the brink of leaf wilt or due for watering through years of experience but, if you are new, light pot is the easiest way to know. Not sure of the coco ratio in your media but coco tends to not hold onto water very well so you also need to be diligent on watering practices.

[Elias2107]

The plants I had problems with earlier have recovered and are growing strong now, only now my newest repotted plant is starting to show some deficiencies. Last I watered it I just used plain water. Seems to mee it a K problem and not N because the yellowing of the leaves goes from top to botten not the other way around.

[Atriax]

Done! Moved them to some small flower pots for the time being. Going to re pot them in the actual ones I was planning when they perk back up

[SoOrbudgal]

Here we go again come on man grow some

[Rwise]

Maybe, IF you can get them into their new home without breaking them, they are stretching for light, if they break its over.

[Atriax]

These seedlings were standing tall yesterday but fell overnight. Can they be saved? They don't seem to be completely dead

[Bluey]

It's not soil. It's a mix of coco perlite vermiculite peat and worm castings.

Confusing huh

[Franklin]

I mean if it were me I wouldn't give it any nutrients at all. Too much calmag or practically anything else can lead to deficiencies (lock out), and from what you said your soil is fresh because you just repotted and your plants are small, so you shouldn't need any nutrients. Let it dry out between waterings, water with pain water and nothing else. That's just me though.

[Bluey]

Still looking a tad over watered and definitely a cal/mag deficiency as earlier diagnosed.
Your temps are way too high. At that stage aim for day time temps of 24⁰C and night time 22⁰C., give or take. RH 70%
You need a suitable cal/mag suppliment. Find one recommended by your nute manufacturer and a bit of N won't hurt either.

[Elias2107]

The plants have been getting better the super silver haze even doesn’t show any signs of deficiency’s at all, however my super lemon haze still doesn’t look the best. I’ve added a few pictures of that plant. I haven’t been watering her for some 2/3 days now and if I did i did it with very low EC (low nutrient level) and the temperatures have been a lot higher, first time it went to as low as 12C now it’s stable 31C. How do I fix the deficiencies of my super lemon haze though?

[Franklin]

No problem, let us know if they get better!

[SoOrbudgal]

No need to say it 2x

[Elias2107]

Thanks for the tips people 👍